a : something that is formed by casting inside a mold or form: such as (one) : a replica (as of the statue) in steel or plaster : casting (two) : a fossil copy of the details of a natural item by mineral infiltration b : an effect taken from an item by using a liquid or plastic material : mold They produced a mask from a wax cast of her facial area.
off the despair scrap here and junk suggest throwing away or breaking up as worthless in existent sort.
discard indicates the letting go or throwing absent of a thing that is now ineffective or superfluous nevertheless frequently not intrinsically valueless.